Benzodithiophene bridged dimeric perylene diimide amphiphiles as efficient solution-processed non-fullerene small molecules
文献类型：期刊论文
| 作者 | Jiang, Bo1; Zhang, Xin1; Zhan, Chuanlang1; Lu, Zhenhuan1; Huang, Jianhua1; Ding, Xunlei2; He, Shenggui2; Yao, Jiannian1 |
| 刊名 | POLYMER CHEMISTRY
 |
| 出版日期 | 2013-09-17 |
| 卷号 | 4期号:17页码:4631-4638 |
| ISSN号 | 1759-9954 |
| DOI | 10.1039/c3py00457k |
| 英文摘要 | Two amphiphilic and highly twisting perylene diimide (PDI) dimers, Bis-PDI-BDT-EG, were synthesized by using 4,8-bis(2-(2-ethylhexylthienyl) benzo[1,2-b:4,5-b']dithiophene (BDT-T) and 4,8-bis(2-ethylhexyloxy) BDT (BDT-O) as covalent bridges at the 7,7'-positions, while at the 1,1'-positions, they were functionalized with weakly solvophobic 2-methoxylethoxyl (EG) units. The subtle structural differences between BDT-O and BDT-T lead to distinct aggregation abilities: with respect to the over-strong aggregation ability of the BDT-O bridged dimer 2, the BDT-T bridged dimer 1 shows largely reduced aggregation ability and is solution-processable in the commonly used organic solvent. The highly twisted conformation between the PDI-BDT-PDI planes produced steric-pairing effects, which directed ordered packing of dimer 1. When dimer 1 was blended with P3HT in a weight D/A ratio of 1 : 2.5, the electron mobility (mu(e)) was 3.4 x 10(-5) cm(2) V-1 s(-1) and the best PCE was 1.72%. Slowing the solvent evaporation speed benefited the packing order of the PDI dimer, and the mu(e) value was slightly increased to 6.0 x 10(-5) cm(2) V-1 s(-1). The best PCE was improved up to 1.87%. The mu(e) was further increased up to 3.4 x 10(-4) cm(2) V-1 s(-1) when the D/A ratio was decreased down to 1 : 2.2 and the best PCE of 1.95% was achieved. Solid absorption spectra and XRD data of the blended films supported the improvement of the packing order of the PDI dimer by slowing the solvent annealing speed. AFM images supported the largely reduced aggregation ability of dimer 1 when blended with P3HT The observed phase size of 35 nm is formed under the slow solvent annealing speed and a D/A ratio of 1 : 2.2. Our results revealed that the amphiphilic nature of the bridged aromatic unit reduces the aggregation ability and facilitates the ordered packing of the PDI units, contributing to the improvement of efficiency. |
| 语种 | 英语 |
| WOS记录号 | WOS:000323361300014 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/54433]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhan, Chuanlang |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Chem, State Key Lab Struct Chem Unstable & Stable Speci, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Bo,Zhang, Xin,Zhan, Chuanlang,et al. Benzodithiophene bridged dimeric perylene diimide amphiphiles as efficient solution-processed non-fullerene small molecules[J]. POLYMER CHEMISTRY,2013,4(17):4631-4638. |
| APA | Jiang, Bo.,Zhang, Xin.,Zhan, Chuanlang.,Lu, Zhenhuan.,Huang, Jianhua.,...&Yao, Jiannian.(2013).Benzodithiophene bridged dimeric perylene diimide amphiphiles as efficient solution-processed non-fullerene small molecules.POLYMER CHEMISTRY,4(17),4631-4638. |
| MLA | Jiang, Bo,et al."Benzodithiophene bridged dimeric perylene diimide amphiphiles as efficient solution-processed non-fullerene small molecules".POLYMER CHEMISTRY 4.17(2013):4631-4638. |
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来源：化学研究所
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